Valve mechanism



.Jun; 28,1927.-

L. J. CLAPP VALVE MEGHANISI Original Filed March 18. 1921 Patented June 28, 1927.

UNITED STATES) PATENT OFFICE.

LEWIS J. CLAPlP, 0F CLAREMONT, NEW HAMIESHIRE, ASSIGNOR TO SULLIVAN MA- CHINERY COMPANY, A CORPORATION OF MASSACHUSETTS.

VALVE MECHANISM.

Application filed March 18, 1921, Serial Ito/453,513. Renewed September 28, 1926.

My invention relates to valve mechanism and more particularly to valve mechanlsms adapted to use in pumps or an compressors.

An object of my invention is to provide an improved pump valve mechanism. Another object of my invention is to provide an improved and -simplified pump valve mechanism in which a single valve member may-coo erate with a plurality of ports by means 0 different portions thereof. Other objects of my invention will appear in the course of the following specification and appended claims.

In the accompanyin shown for purposes of i lustration, one form which my invention may assume in practice.

In these drawin s,-

Fig. 1 is a central vertical section through one end of the cylinder of a pump comprisin the illustrative form of my improved va ve mechanism.

Fig. 2 is a transverse section on the line 2-2 of Fig. 1.

For purposes of illustration I have disclosed my improved valve mechanism in use in a pump of the compressor type, which comprises a cylinder 1 having a bore 2 in which a piston 3 is reciprocable 1n any usual manner. The cylinder is closed at its rear end by a plurality of cooperating heads comprising an intermediate head 4 and an outer head 5. My improved valve mechanism now to be described is located within the intermediate head. i

According to this illustrative construction, the intermediate head '4 is cut away at its central portion in such manner as to leave a generally annular rim portion or housing member 6. This rim portion is traversed at one side by a port slot 7 which communicates with the inner side 8 of .the housing member and is surrounded on said inner side by a raised valve seating surface 9 which is of uniform curvature in the present instance. The opposite side of'the housing member 6 is provided with an opening through one edge thereof, herein the upper edge as indicated at 10, and is also cut away atits inner side at a'place approximately opposite the port 7 to varying degrees and provided with a plurality of'stop members 11 each of different length. At diametrically opposite points the member 6 is provided with a plurality of inwardly projecting shoulders 12 and 13. Within the interior drawings, I- have of the generally annular housing member 6 is disposed a second member 15 which is semi-cylindrical in periphery on one side and on the other side deviates from this form by reason of the fact that it is cut away .progressively to provide'a port opening. On the semi-circular side, the member 15 is traversed at its periphery by a port 16 which isarcuate in form and which extends also through the lower lateral surface of the member 15 as indicated at 17 (Fig. 1). A valve seat surface 18 of uniform curvature is provided surrounding the port 16. The cut away portion of the member 15, herein designated 19, communicates by means of a port 20 with the interior of the cylinder and is provided with a series of stop members 21 of decreasing length as their distance from the shoulder 12 increases. In assembling my improved valve mechanism, the member 15 is inserted within the member 6 and is secured in suitable relation thereto with the port 16 opposite the cut away portion 10 of the member 6 and with the cut away portion 19 opposite the valve seat 9. A valve member of substantially circular cross section, but not making quite a complete circle, is shown at 22 and is clamped between the shoulder 12 and the member 15 by means of a bolt 23. The member 15 is chambered on its interior as indicated at 24 and 25 and communicates with a chamber 26 in the outer head member 5, whereby a cooling medium may be supplied to the interior of the head if desired. A chamber 27 con- .nects with the space'ltl and a discharge line 28 leads therefrom. The members 5 and 15 are held in assembled relation by bolts 29, and the members 4 and 5 are secured to the cylinder by any suitable means not shown.

From the foregoing description, the mode of operation of my improved valve mechanism will, it is thought, be readily apparent.

The substantially annular valve is adapted seat 9 and the pressure developed upon upward motion 0 the piston causes the valve 22 at its opposite side to raise from the seat 18 and to uncover the port 16 whereby fluid 1 drawn in and discharged from the cylinder 2 at each reciprocation of the piston.

While I have in this application specifically described one form which m invention may assume in practice, it will be understood that this form is shown for purposes of illustration and that my invention may be modified and embodied in various other forms without departing from its spirit or the scope of the appended claims.

What I claim as new and desire to secure by Letters Patent is! 1. In a'compressor valve mechanism, coaxial valve seating surfaces, inlet and discharge ports traversing said surfaces, and a single radially flexible valve. cooperating with said ports.

2. In a pump valve mechanism, coaxial valve seating surfaces, ports traversing said surfaces and respectively communicating with a pump cylinder and with an exterior space, and a single radially flexible valve 00- operating with said ports.

3. In a compressor valve mechanism, coaxial longitudinally extending valve seating surfaces, inlet and discharge ports traversing said surfaces, and a single valve cooper ating at spacially separated portions thereof with said ports.

4. In a compressor valve mechanism, coaxial valve seating surfaces, inlet and discharge ports traversing said surfaces, and a single valve cooperating at spacially separated portions thereof with said ports, said valve having a portion movable away from the longitudinal axis of said mechanism.

'5. In a compressor valve mechanism, coaxial valve seating surfaces, ports traversing said surfaces, and a single valve cooperating at the opposite sides thereof with said ports and having a free end movable in a radial direction.

6. In a pump valve mechanism, concentric valve seating surfaces formed'on different radii, ports traversing said surfaces, and a 'single' valve cooperating. with said ports.

7. In a pump valve mechanism, concentric valve seatmg surfaces formed on different radii, ports traversing said surfaces, and a single valve cooperating with the opposite sides thereof with said ports;

8. In a pump valve mechanism, concentric valve seating surfaces formed on different radii, ports traversing said surfaces, and a single valve cooperatmg with opposite ends thereof with said ports.

9. In a compressor valve mechanism, coaxial valve seating surfaces, inlet and discharge ports traversing said surfaces in a common plane which is wholly disposed at a right angle to the longitudinal axis of said mechanism, and a single valve cooperating with said ports.

10. In a compressor valve mechanism, coaxial valve seatin surfaces, radially extending inlet and disc iarge ports traversing said surfaces, and a single valve cooperating with said ports and having a portion thereof'betweensaid ports held against movement.

11. In a compressor valve mechanism, a plurality of semi-cylindrical valve seating surfaces formed on different radii, fluid chambers disposed on opposite sides of said surfaces, ports traversing said surfaces, and a valve seating on said surfaces and normally interrupting communication between the opposite sides of said surfaces.

12. In a pump valve mechanism, a plurality of curved valve seating surfaces formed on different radii, a single valve cooperating with said surfaces, and ports formed in said surfaces and closed by opposite sides'of said valve.

13. In a pump valve mechanism,a housing having a chamber formed therein, a portion of whose inner periphery is semicylindrical and also provided with a ortion out back opposite said semi-cylindrical portion, a member disposed within said chamber and having a portion of its periphery semicylindrical, a portion opposite said semicylindrical portion cut back from a cylindrical surface,the semi-cylindrical portions of said member and said housing being dis-1 posed opposite the cut back portions of the ousing and member, ports traversing the semi-cylindrical portions of the peripheries of the member and housing, 'a single valve member cooperating with said ports, flow passages communicating with said ports, and flow passages communicating with the cut back portions of said member and housing.

14. In a pump valve mechanism, a housing havin a chamber formed therein a portion of w ose periphery is semi-cylindrical and also provided with a portion cut back opposite said semi-cylindrical portion, a member disposed within .said chamber and having a portion of its periphery semi-cylindrical, and a ortion opposite said semicylindrical portion cut back from a cylindrical surface, the semi-cylindrical portions of said member and said housing being disposed opposite the cut back portions of said housing and said member, ports traversing the semi-cylindrical portions of the peripheries of the member and housing, a single valve member cooperating with said ports, flow passages communicating with said ports, and flow passages communicating with the cut back portions of said member and housing, said valve being held immovable intermediate its ends between said member and said housing. 7

15. In a pump valve mechanism, a valve cage member traversed by inlet and discharge ports, valve seat" surfaces surrounding said ports, said ports being arranged at opposite sides of a plane cutting said valve cage and extending longitudinally thereof, and flexible valve means controlling said ports and moving towards said plane to open one of said ports and moving therefrom to i open the other.

16. In a compressor valve mechanism, coaxial valve seating surfaces extending n a direction disposed at an angle to a transverse.

plane, ports traversing said surfaces, and a single valve having flexible end portions movable in opposite directions cooperating with said ports. 1

17. In a compressor valve mechanism, curved valve seating surfaces lying in a vertical position, ports traversing said surfaces, and a single generally annular valve cooperating therewith having sitely movable in a horizontal plane but at a point icoaxial valve seating charge ports transversing portions oppoin the same direction movable generally longitudinal axis of said with respect to the mechanism to open said ports.

18. In a compressor valve mechanism, coaxial valve seating surfaces, ports traversing said surfaces, and a smgle generally annular valve cooperating with said sur-' faces having a rigid central portion and radially movable flexible end portions.

19. In a compressor valve mechanism, coaxial valve seating surfaces, inlet and discharge ports transversing said surfaces, and a single valve having-radially flexible end portions movable in opposite directions cooperating with said ports. 7

20. In a compressor valve mechanism,

surfaces, inlet and dissaid surfaces, and

a single valve havin a rigidly secured central portion and flexi leend portions radially movable in opposite directions cooperating with said ports.-

21. In a compressor valve mechanism, arcuate valve seating surfaces formed on different radii, inletand discharge ports transversing said surfaces, and a single valve cooperating with said ports.

In testimony whereof I affix my signature.

LEWIS J. CLAPP. 

